1 /****************************************************************************
2  * Copyright (c) 2012,2013 Free Software Foundation, Inc.                   *
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28 
29 /****************************************************************************
30  *  Author: Thomas E. Dickey                        2012                    *
31  ****************************************************************************/
32 
33 #ifndef STRING_HACKS_H
34 #define STRING_HACKS_H 1
35 
36 #include <ncurses_cfg.h>
37 
38 /*
39  * $Id: nc_string.h,v 1.4 2013/12/15 01:09:19 tom Exp $
40  *
41  * String-hacks.  Use these macros to stifle warnings on (presumably) correct
42  * uses of strcat, strcpy and sprintf.
43  *
44  * By the way -
45  * A fundamental limitation of the interfaces (and frequent issue in bug
46  * reports using these functions) is that sizes are passed as unsigned values
47  * (with associated sign-extension problems), limiting their effectiveness
48  * when checking for buffer overflow.
49  */
50 
51 #ifdef __cplusplus
52 #define NCURSES_VOID		/* nothing */
53 #else
54 #define NCURSES_VOID (void)
55 #endif
56 
57 #if USE_STRING_HACKS && HAVE_STRLCAT
58 #define _nc_STRCAT(d,s,n)	NCURSES_VOID strlcat((d),(s),NCURSES_CAST(size_t,n))
59 #else
60 #define _nc_STRCAT(d,s,n)	NCURSES_VOID strcat((d),(s))
61 #endif
62 
63 #if USE_STRING_HACKS && HAVE_STRLCPY
64 #define _nc_STRCPY(d,s,n)	NCURSES_VOID strlcpy((d),(s),NCURSES_CAST(size_t,n))
65 #else
66 #define _nc_STRCPY(d,s,n)	NCURSES_VOID strcpy((d),(s))
67 #endif
68 
69 #if USE_STRING_HACKS && HAVE_SNPRINTF
70 #define _nc_SPRINTF             NCURSES_VOID snprintf
71 #define _nc_SLIMIT(n)           NCURSES_CAST(size_t,n),
72 #else
73 #define _nc_SPRINTF             NCURSES_VOID sprintf
74 #define _nc_SLIMIT(n)		/* nothing */
75 #endif
76 
77 #endif /* STRING_HACKS_H */
78